Go Back   IceInSpace > Equipment > Astrophotography and Imaging Equipment and Discussions

Reply
 
Thread Tools Rate Thread
  #1  
Old 24-03-2013, 07:29 PM
skysurfer's Avatar
skysurfer
Dark sky rules !

skysurfer is offline
 
Join Date: Dec 2011
Location: 52N 6E (EU)
Posts: 1,053
Test of two telescopes and Canon 'L' telephoto lens

Yesterday I tested two telescopes and a 300mm Canon lens for their sharpness and color errors in prime focus.
Even a short (f/6.3) achro renders quite good images.

Here the test report:

http://skysurfer.eu/teletest.php
Reply With Quote
  #2  
Old 25-03-2013, 05:45 AM
Irish stargazer's Avatar
Irish stargazer (John)
Registered User

Irish stargazer is offline
 
Join Date: Jul 2008
Location: Limerick Ireland
Posts: 681
Small refractors make decent telephoto lenses. This shot was taken through a Megrez 72 and a Canon 7D using a Skywatcher field flattener. It's tack sharp but lacks the depth of field you get with a good camera lens.

http://www.flickr.com/photos/7703127...ream/lightbox/
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 03:28 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
NexDome Observatories
Advertisement
SkyWatcher Australia
Advertisement
Meade Australia
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
Celestron Australia
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement